Automobile dump body and hoist



`Jun 20, 1939. E. R. BARRETT 2,162,831

I AUTOMOBILE DUMP BODY AND HOISTV Original Filed May 3l, 1955 2 Sheets-Sheet June 20, 1.939.

E. R. BARRETT AUTOMOBILE DUMP BODY AND HOIST Original Filed May 5l, 1935 2 Sheets-Sheet 2 i INVENToR. Ein/dra ,Bdrre /QMQ/M ATTORNEYS.

v vBY Patented June 1939 UNITED STATES vPA'ri-zNTI OFFICE 2,162,831 y' 4j,... Y AUTOMOBILE DUMP BODY HOIST Edward R.A Barrett, Detroit, Mich., assignor' to4 .Gar Wood Industries, Inc., a corporation o f A Michigan Application May s1, 1935, serial No, '24,315'

` Renewed February 23, 1939 -11 claims. (ci iss-22) Y My` invention relates'to automotive vehicles and particularly to anautomotive vehicle having a tiltable body thereon and to the method and'7 means of tilting and positioning the body.

While yautomotive vehicles of the dump body type have been employed heretofore in the art embodying a devicev for tilting the' body which is driven by the engine of the vehicle, my present .invention relates to improved structure both for Vsupporting the dump b'ody and alsofqr controlling the positionof the body.

The dump body is constructed primarily for a small automobile chassis frame and is of unique of the body frame is of triangular forinposition-V ing the innerv flanges close together near the front end of the frame. The a'nges receive and support brackets which engage trunnions proy vided on the near hed of the cylinder.- This construction permits the oscillation. of the cylinder and itsV operation Without producing a large bending moment'on the sills as occurred when a shaft supported the cylinder on the other webs of the sills. i

`TheV sideesills are interconnected, at this point by a single cross brace which engages the'side ii'anges' of the sills 'as well as the Vinwardly ex- .tending portions thereof.

sills are interconnected by a shaft which is weldedv e rear ends of the directly thereto to provide a cross bracev for this end of the frame and a support vfor the brackets on which the dump body pivotswhen tilted. The cylinder of'the tilting or hoisting mechanism is unique in having the head, which is provided with the supporting trunnions, also support the pump for circulating thel fluid, preferably oil, from one side of the piston to-the other to effect the tilting of the dump body. y

' Accordingly, the main objects of my invention are; to provide a sill construction for a dump body which may be attached to several different automoble chassis frames; to construct a dump body sill -of inverted channelsection, having .an outwardly extending braced and inwardly converging flanges; lto construct a supporting-frame for a dump body from two sidesillrstampings and a third stamping interconnected therewith' near the front end of the frame; to interconnect the yso as to raise and lower the dump body I4, and

rear end of the sills with a shaft which is welded thereto to provide strength and form pivots upon which the brackets of the dump body rotate; to mount trunnions provided on the head of a cylinder which effecbthe tilting ofthe ,dump bo'dy, on 6 brackets carriedby the cross brace and inner flanges of the sills; and ingeneral to provide a dump body .for an automotive vehicle chassis framewhich is attachable to various types and widths of frames, having parts interchangeable 10 to locate the power take-off device and controls from either side of` the device and transmission; which is simple in construction, positive in operlation and which is economical of manufacture.

Other objects and features of novelty of my 15 invention will be either'specically pointed out or will become apparent when referring, for a better understanding of my invention, to the following description taken in conjunction with the accompanying drawings, wherein:

'Figure 1 is a view, partly in'section and partly in elevation, of an automotive vehicle having a dum'p'body which embodies -features of my in- Fig. 2 is an' enlarged sectional View of the structure illustrated in Fig. 1, taken on the line 2-2 thereof,

Fig. 3 is an enlarged sectional view of the structure illustrated in Fig. 2, taken on the line 3 3 thereof,

Fig. 4 is a sectional view of the structure illustrated in Fig. 3, taken on the line 4,-! thereof,

and, y

Fig. 5 is an lenlarged sectional view of the structure illustrated in Fig. 4, taken on the line 5 5 thereof.

An automobile vehicle I3 is illustrated in Fig. 1 provided with a dump body I4 which is supported for tilting movement Aon a sill frame I5 which rests uponand is secured to the chassis frame I6 thereof. Axhoisting' mechanism I'I, mounted on the sill frame I 5, is utilized for hoisting, bytilting the' dump body I4 -into a position illustrated in dot-and-dash line. A uid pumping mechanism I8 is carried' by the hoisting mechanism I'I which is driven from the transmission of the automotive vehicle. A power take-oli device I9 is interconnectible with the gears of the vehicle transmission and is utilized for driving the pump I8 of the mechanism for forcing a flow of fluid into thehoisti-ng mechanism II to thereby effect the raising of the dump body I4. The pump I8 may be of any suitable form arranged to effect the actuation of the hoisting mechanism I'I preferably embodies valve mechanism. (not shown) disposed for control by a control lever |8a, which, through a push rod |821, is connected to a hand lever ic positioned within the vehicle so as to permit a selective control ofthe driving connection for the pump |31.

The simplied sill fram construction is unique I in that only three metal stampings are utilized;

two side sills and a cross brace, which when assembled, support the dump body as Well as its actuating mechanism. The side sills 2i of the sill frame l are of downwardly presenting channel section, having a vertically disposed fiange 22, an inwardlydisposed triangular web 23, and a downwardly disposed flange 2d. The lower edge of the vertical iiange 22 is flanged outwardly at 25 to form a support for the sill frame i5 on the chassis frame iii of the vehicle. frame is also illustrated at 26 to vdisclose the fact that the sills may vary in vertical dimensions as well as in spacing and still be capable of receiving and supporting the sill frame i5 of the dump body.`

For bracingthe flange 25 relative to the vweb 22, pressed-out triangular portions 2l are provided throughout the length of the rail 2i, as

illustrated more clearly in Fig. 2. It will be noted also in Fig. 2 that the triangular top web 23 increases in width from the rear toward the iront end of the frame. This Areduces the spacing oi the flanges 2d which vtake the thrust of the cylinder 28 of the hoisting mechanism il.

'Ihe web 23 of the sill has .a central portion removed to form an opening 23, the side edges about the opening being anged downwardly at 3|, as

illustrated in Fig. 4. This provides additional strength and reduces the weight of the sill construction. The rear end of the sill frame i5 is sloped at 32 to permit the tilting of the dump body thereon, while permitting the body when lowered to rest directly upon the sill.

AThe cross-brace 34 comprises a stamping of downwardly presented channel section having extending flanges which engage the flange 22 and the web 23, of the sills 2|, and is riveted, bolted,

Welded or otherwise' secured thereto in rigid relation. The cross brace 34 is of arcuate shape to provide clearance for the cylinder 28, as illustrated in Fig. 4.

The oorcf the dump body I4 rests upon a plurality of cross channel elements 35 which are supported on upwardly presented channel shaped rails 36, the web 31 of which rests upon the web 23 of the sills 2|, as illustrated in Fig. 4. The rear ends of the rails 36 are provided with brackets 38, removably secure'd thereto. The brackets are provided with a hub 39 which extends over a shaft 4| which is rigidly secured to the anges 22 ofthe sill frame l5, preferably by welding, to form a cross brace for the sills 2l, as well as pivots upon which tilted.

Angle Vshaped brackets 42 are lbolted to the inner anges 24 of the sills 2| and to the forward ange of the' cross brace 34, as illustrated in Figs. 2, 4 andl 5. The brackets l42 are provided with hubs 43l in whichthe trunnions 44 on the head of the cylinder 23 are secured for pivotal movement so as to support the cylinderfor swinging moye- The chassis the dump body I4 may bel amasar inated since the stresses are applied longitudinally o the -flanges 24. The greatest strain occurs when the body is loaded and initially moved from carrying position. At this time, the greatest angle occurs between the piston rod and.

a line between the shaft 4| and the point f of connection between the piston rod and the dump body. These maximum strains are set up longitudinally of the flanges 2li and the strains on the anges 22 set up by a bending moment by constructions employed heretofore, are entirely eliminated.'4

Referring more particularly to Figs. l, 2 and 3, the hoistingmechani'sm il comprises a cylinder 28 having a packing head di at one' end through which a reciprocable piston rod d@ extends. The other end of the cylinder is provided with Va head l? having the trunnions it disposed thereon. i/Vhile I have illustrated and described the cylinder as having the trunnions disposed on the head til, it is to be understood that the trunnions may bedisposed elsewhere as on a band secured to the body of the cylinder. f

A bracket 48 is provided -on the bottom of the dump body 'to which the end t@ ofthe piston rod 15S is pivotally connected by a pin 5|. A spring 52 is disposed about the piston rod, within the cylinder, for cushioning the outward movement of the piston rod and for aiding in returning the piston and rod toward the head 3l. It will be understood that a suitable piston (not shown) is slidably received in the cylinder 28 and is secured to the piston rod-l it. The head' 41 also serves to support the previously described pump andvalve control mechanism i8.

My construction is exceedingly unique when providing a dump body and supporting sills which vas to provide a longitudinal thrust on the inner sill flanges. My construction permits a sill undercarriage, a. dum body along with the actuating elements therefor, to be constructed as a standard lmit .and furnished to the trade for application to a number of diiierent automotive vehicles having different characteristitcs and chassis dimensions. This is believedw to be a Vmaterial advancement in the art.

While I have described and illustrated but a single embodiment of my invention, it will be apparent to those skilled in the art that various l`changes, omissions, additions and substitutions may be mad therein Without'departing from the spirit and scope vof my`inventionyas set forth in the accompanying claims.

I claim as my invention:

1. AA dump body and supporting structure attachable to a chassis frame including, in combination, a sill frame for supporting said body which includes longitudinally extending downwardly presented' taperedchannel elements, the outer sides of which are hanged outwardly at the bottom for. engagement with 'longitudinal lmembers of the chassis frame.

2. A dumpbody and supporting: structure attachable to a chassis frame including, in combination, a sill frame for supporting said'body which includes longitudinally extending downwardly presented tapered channel elements, the outer sides of which are flanged outwardly at the bottom for engagement with longitudinal members of the chassis frame, and a brace interconnecting said elements at the wide'portion of said tapered elements. f

3. A dump body-and supporting structure attachable to a chassis fframe including, in combination, a sill frame for supporting said body which includes downwardly presented tapered channel elements, the outer sides of which are parallel to the chassis frame, the innersides of which converge toward the front of the sill frame, a cross brace interconnecting the elements near the front of the frame, brackets supported on the inner sides of said elements and the cross brace,. and aA body lifting mechanism supported by said brackets.

4. A dump body and supporting structure atta'chable to a chassis frame including, in combination, a sill frame for supporting said body which includes downwardly presented tapered channel elements, the outer sides of which are parallel to the chassis frame, the inner sides of which converge toward the front of the sill frame,

' a cross brace'interconnecting the elements near the front of the frame, brackets supported on the inner sides of said element and the cross brace, a body lifting mechanism supported by said brackets, and a shaft interconnecting the rear end of said elements and forming pivots upon which the dump body is tiltable. n

5. A dump body and supporting structure attachable to a chassis frame including, in combination, a sill frame including downwardly presentedtapered channel elements, the inner sides `of which converge toward the front of the frame,

brackets supported on said inner sides near the' front end thereof, and a body raising mechanism tiltably supported by said brackets.

6. vA dump body supporting and actuating mechanism mountable on a lchassis frame including, in combination, sill elements for supporting the body on the chassis frame, across brace intersecting said elements near the front end thereof,

a shaft welded to the elements at the rear end and forming pivots and the sole rear cross brace therefor, brackets on the body engaging the shaft for supporting the body for tilting movement, and a'hoisting mechanism supported for pivotal movement on the cross brace and innerv sides ofthe elements and attached to the body for effecting the raising and lowering thereof.

7.' A vdump body supportingstructure attachable to the longitudinally` extending members of a chassis, including a pair-of longitudinally e'xtending downwardly .presenting channel-shaped elements, the laterally outer leg of each whereof is provided with an outwardly extending flange,

said flanges being positioned ito bear upon said chassis members respectively and constituting I the sole supporting connection between. said elements and said chassisyand means connecting said elements together.'

Va chassis,

8. A dump body supporting structure attachable to the longitudinally extending members of including a pair of longitudinally extending downwardly presenting channel-shaped elements, the laterally outer leg of each whereof is provided with an outwardly extending flange,

said anges being positioned to bear upon said chassis members respectively and constituting the sole supporting connection between said elements and said chassis, and means connecting said elements together, the webs of said elements being wider at one end than at the other, and a dump between the hoisting mechanism and the frame elements respectively.

10. A dump body supporting and actuating i mechanism mountable on a vehicle chassis frame, including in combination, a rear cross member,

a front cross brace, supporting means connected at-the front end to said front cross-brace and connected at the rear end to said rear cross brace, means connected to said mechanism adjacent the rear end thereof for forming a pivotal bearing support for the dump body, 4and hoisting means connected to said dump body and to said front cross brace adjacent the longitudinal center line of the mechanism, said supporting means having parts extending forwardly from the rear cross brace in forwardly converging relation and being connected to the front cross brace immediately adjacent the point .of connection between the front cross brace and the hoisting mechanism.

y 11. -A dump body supporting and actuating mechanism mountable on a vehicle chassis frame, including in combination, a rear cross brace member, a front cross brace member, a pair of side frame members connected at the front ends thereof to said front cross brace member and connected at the rear end thereof to said rear cross brace member, means connected to said ,mechanism adjacent the rear end thereof for forming --a pivotal bearing support for the member immediately adjacent the point'of connectionbetween the front cross brace member Aand the hoisting mechanism.

EDWARD R. 

